I CAN CONFIRM THAT THE PROBLEM of CSS and others as can not create new items from frontend administration regards to have activate SEF in configuration joomla panel.So... to resolve the problem, just UNMARK the SEF option there!

VirtueMart developers have work to resolve for the next version of product.

SEF is important from the Google point of view! So we need it in our VirtueMart sites!!

//hack since template was not getting scripts and css correctly.$_REQUEST['usefetchscript'] = "0";//end hackEDIT! ACtually, to make this permanent, you need to change the main class file at /administrator/components/com_virtuemart/classes/mainframe.class.php